sieverts.dk

📜 Historical scan 2026-10-08 21:22:30 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

sieverts.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 11 March 1997 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.10.221.72 is hosted by Fiberby ApS (AS42541) in Denmark. Mail is handled by sieverts-dk.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, publishes a DMARC policy and has no IPv6 address. Below are all of its DNS records from this scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records 128ms

Nameserver	IP addresses	PTR	ASN / ISP
ns01.one.com	195.206.121.10 2001:67c:28cc::10	ns01.one.com ns01.one.com	AS197495 One.com A/S AS197495 One.com A/S
ns02.one.com	185.10.11.10 2001:67c:3c0::10	ns02.one.com ns02.one.com	AS51468 One.com A/S AS51468 One.com A/S

🌍 A Records#

1 records 151ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
185.10.221.72	1200s	185-10-221-72.ip4.fiberby.net	AS42541	Fiberby ApS	185.10.220.0/22	🇩🇰 Denmark	Copenhagen

📧 MX Records#

1 records 137ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	1200s	sieverts-dk.mail.protection.outlook.com	2a01:111:f403:ca04::9 2a01:111:f403:ca04::d 2a01:111:f403:ca09::22 2a01:111:f403:ca48::12 52.101.103.140 52.101.103.162 52.101.209.31 52.101.91.153	mail-db7pr03cu00601.inbound.protection.outlook.com mail-db6pr03cu00105.inbound.protection.outlook.com mail-am7pr02cu00302.inbound.protection.outlook.com mail-miypr05cu00202.inbound.protection.outlook.com mail-miypr02cu00204.inbound.protection.outlook.com mail-miypr03cu00202.inbound.protection.outlook.com mail-cpjpr05cu00207.inbound.protection.outlook.com mail-matpr04cu00101.inbound.protection.outlook.com	AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	autodiscover.outlook.com → 52.98.154.152

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

3 records 302ms

TXT Record
jmdc8fk799etqqcav1d2796pbf
MS=ms89548264
v=spf1 include:spf.protection.outlook.com ip4:185.10.221.72 -all

✉️ SPF#

Policy	Record (sieverts.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com ip4:185.10.221.72 -all

📨 DMARC#

Policy	Record (_dmarc.sieverts.dk)
p=quarantine	v=DMARC1; p=quarantine; pct=100

📬 MTA-STS#

✗ No MTA-STS policy — SMTP TLS not enforced

📈 TLSRPT#

✗ No TLSRPT record — no SMTP TLS failure reporting

📜 CAA Records#

✗ No CAA records — any CA may issue certificates

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-11 00:46:38

www	185.10.221.72 (AS42541) (address records, no CNAME)
www vs bare domain	Same network sieverts.dk: 185.10.221.72 (AS42541) www.sieverts.dk: 185.10.221.72 (AS42541)
Wildcard	No
Denial of existence	NSEC3 · 0 iterations · no salt RFC 9276 ✓
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 1/10 · policy: -all

No problems found

🔗 TLSA / DANE#

✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)

🔐 DNSSEC#

275ms

Check	Result
Validation Status	🔒 Secure
AD Flag (resolver validates)	✓ Set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	fully validated

🏷️ SOA#

105ms

Field	Value
Serial	2026100801
Primary NS (MNAME)	ns01.one.com
Responsible (RNAME)	hostmaster@one.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	600s

📋 Registration#

WHOIS fetched 2026-10-06 21:03:55

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	1997-03-11
Expires	2027-03-31 (160d)

📋 WHOIS#

⏱️ Lookup Timing#

128ms

151ms

137ms

AAAA

155ms

TXT

302ms

CAA

128ms

HTTPS

100ms

TLSA

1523ms

SOA

105ms

MTA-STS

177ms

DNSSEC

275ms

SRV

164ms

Total

3551ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-11 00:46:37	1843ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-08 21:22:30 shown	3551ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-07 21:13:55	2289ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-06 20:53:52	1120ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-02 18:31:15	2744ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-17 06:19:22	1486ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-14 11:28:30	1416ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-25 14:54:04	1454ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-09 19:33:09	1248ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-15 16:22:00	2125ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-29 12:51:42	758ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-24 14:22:12	3420ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-22 07:31:14	1117ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-18 03:47:54	908ms	2 NS 1 A 1 MX	🔒 Secure